resolve postifx undefined paramter
/usr/bin/postconf: warning: /etc/postfix/master.cf: undefined parameter: post_queue_smtpd_recipient_restrictionsDue to an influx of spam, we have had to temporarily disable account registrations. Please write an email to accountsupport@archlinux.org, with your desired username, if you want to get access. Sorry for the inconvenience.
/usr/bin/postconf: warning: /etc/postfix/master.cf: undefined parameter: post_queue_smtpd_recipient_restrictions